GB1273647A - Improvements relating to motor control circuits - Google Patents

Improvements relating to motor control circuits

Info

Publication number
GB1273647A
GB1273647A GB50763/70A GB5076370A GB1273647A GB 1273647 A GB1273647 A GB 1273647A GB 50763/70 A GB50763/70 A GB 50763/70A GB 5076370 A GB5076370 A GB 5076370A GB 1273647 A GB1273647 A GB 1273647A
Authority
GB
United Kingdom
Prior art keywords
motor
thyristor
transistor
voltage
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB50763/70A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vyzk Ustav Zdravot Tech
Original Assignee
Vyzk Ustav Zdravot Tech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vyzk Ustav Zdravot Tech filed Critical Vyzk Ustav Zdravot Tech
Publication of GB1273647A publication Critical patent/GB1273647A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
    • H02P7/295—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC of the kind having one thyristor or the like in series with the power supply and the motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

1,273,647. Control of D.C. motors. VYZKUMNY USTAV ZDRAVOTNICKE TECHNIKY. 26 Oct., 1970 [12 Nov., 1969], No. 50763/70. Heading H2J. [Also in Division G3] A thyristor TY1 and a transistor T1 are connected in series between A.C. source and a D.C. motor M, the thyristor passing current during a portion of a half-cycle of the A.C. supply which depends on the back EMF of the motor, thereby to stabilise the speed at a predetermined value, and the transistor being arranged to cut off the supply to the motor at a predetermined motor current, thereby to provide overload protection for the motor. A reference voltage for controlling the thyristor TY1 is provided by a zener diode ZD1, associated with capacitor C1 and resistors R1, R2. The back EMF of the motor opposes the voltage across the capacitor C1 to determine the firing-angle of the thyristor. When the armature current exceeds a predetermined value, the voltage-drop across resistor R6 is sufficient to render zener diodes ZD2-ZD4 conductive so that the transistor T1 becomes non-conductive. The motor may drive a dental drill.
GB50763/70A 1969-11-12 1970-10-26 Improvements relating to motor control circuits Expired GB1273647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS745369 1969-11-12

Publications (1)

Publication Number Publication Date
GB1273647A true GB1273647A (en) 1972-05-10

Family

ID=5423680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50763/70A Expired GB1273647A (en) 1969-11-12 1970-10-26 Improvements relating to motor control circuits

Country Status (3)

Country Link
DE (1) DE2050606A1 (en)
FR (1) FR2069423A5 (en)
GB (1) GB1273647A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110063015A (en) * 2016-11-10 2019-07-26 西门子股份公司 Start the method and permanent magnet synchronous motor of permanent magnet synchronous motor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3239968A1 (en) * 1982-10-28 1984-05-03 Black & Decker, Inc. (Eine Gesellschaft N.D.Ges.D. Staates Delaware), Newark, Del. Circuit arrangement for speed regulation of DC and universal motors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110063015A (en) * 2016-11-10 2019-07-26 西门子股份公司 Start the method and permanent magnet synchronous motor of permanent magnet synchronous motor
CN110063015B (en) * 2016-11-10 2022-07-12 西门子股份公司 Method for starting permanent magnet synchronous motor and permanent magnet synchronous motor

Also Published As

Publication number Publication date
DE2050606A1 (en) 1971-05-13
FR2069423A5 (en) 1971-09-03

Similar Documents

Publication Publication Date Title
GB1426594A (en) Brushless synchronous motor
US3931557A (en) DC Motor stall protection circuit
GB1368646A (en) Commutatorless dc motor
GB1324285A (en) Apparatus for use in electric discharge machining a workpiece
GB1255225A (en) A control circuit for an alternating current motor
GB1531490A (en) Pulse controllers for series motors
GB1273647A (en) Improvements relating to motor control circuits
GB1449607A (en) Electrical power supply systems
GB1286989A (en) Improvements in or relating to variable speed controls
GB1347007A (en) Vehicle battery charging system
GB1480063A (en) Control circuits for electrically driven vehicles
GB1255040A (en) Speed and voltage controls for a.c. motors
GB1181646A (en) Speed Control System for a D.C. Electric Motor
GB1188250A (en) Control Circuit for Use with a Direct Current Dynamo-Electric Machine
GB1079525A (en) Speed control system for centrifuge motors and the like
GB1447778A (en) Speed control circuit for a universal motor
GB1214914A (en) Improvements in or relating to motor-driven miniature apparatus for connection to differing supply voltages
GB1277452A (en) Short circuit protective network
GB1441595A (en) Electrical inverters
GB1170015A (en) Improvements in or relating to an Adjusting System for Universal Motors
GB1115588A (en) Circuit for automatically adjusting a load to different dc supply voltages
GB1383551A (en) Electrical discharge machining apparatus having a short circuit protection system
GB1142789A (en) Arrangement for controlling a direct current by means of resistors
GB1398793A (en) Circuit arrangement for the speed control of electric motors
GB900088A (en) Regulated power supply for electric motors

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees